Heater for steam-boilers.



No. 800,289. PATE-NTED SEPT. 26, 1905.

H. E. GARDNER.

HEATER FOR STEAM BOILERS.

APPLICATION FILED FEB. 24,190,5-

oopoooooooooqo C Gttomgo Awnpyv, a. unnmil C0,. nmmumocmvnins. WASHINGTON. o. c

NI ED sTATRs LPJAIENTI OFFICE.

. HEATER FOR STEAM-BOILERS- Specification of Letters Patent.

Application filed February 24, 1905- Serial No. 247,171-

.To all w/wm it may concern/.-

Be it known that I, HENRY E. GARDNER, a citizen of the United States, residing at Aldenbridge, Bossier parish, State of Louisiana, have invented certain new and useful Improvements in Heaters for Steam-Boilers, of which the following is a specification.

This invention relates to means for heating the feed-water of steam-boilers, which heater is constructed to form the arch at the rear of the boiler. I I The object of the invention is to provide improvements in apparatus of the character described, as will be hereinafter set forth.

In theaccompany-ing drawings, Figure Us a longitudinal section of a boiler, its foundation, and an arch-heater and connections em bodying my invention. Fig. 2'is a rear end view of a heater and boiler.

In the accompanying drawings the boiler A is mounted upon a suitable foundation B, on which also is mounted the heater G, adapted to be turned on its base, so that the-upper end may rest against or be moved away from the rear end of the boiler. The fire-box Dis locatedbeneath the forward end of the boiler in awell-known manner, and the gases from the fire pass along beneath the, boiler to .the rear end, where they come in contact with the arched forward face of the heater and are turned back by the arch to be passed through the boiler. The boiler may be of any usual or suitable construction, either water or firetube, and upon the top may-be mounted a steam-dome 1..

The heater 0 may be constructed of boilerplate or of any other suitable material and is preferably strengthened by the transverse stays 2. Ahandle 3 may be secured to the outside of the heater to facilitate the turning of the upper end of the heater toward and away from the end of the boiler. At any suitable part ofthe heater may be located a hand-hole 4;. The cold feed-water supply is introduced through an inlet 5, the inlet-pipe extending within the interior of the heater and being coiled therein. A steam-pipe 6 connects the upper part of the boiler, as the steam-dome, with the upper part of the heater, and in the pipe 6 are located a valve 7 and a union 8.

A boiler-feed-water pipe 9 extends from the top of the heater to the top of the boiler or may extend through the boiler at the end or sides, if more convenient. This pipeextends into the interior of the heater for a short distance in order to avoid the passage of foreign matter which may be upon the'surface of the water within the heater into the pipe 9. At its other end the pipe 9 extends into proximity with the boiler-tubes, so that the water isdelivered into the body of water already in the boiler. The pipe 9 is located below the pipe 6, so that the feed will take place through the former andwill not be fed through the pipe 6 and pass downwardly through the steam, thus condensing it. In the pipe 9 is located a valve 10 and union 11.

A blow-off 12 is connected with the bottom of the boiler and may be controlled by a valve 13. A blow-off 14 is connected with the bottom of the heater and may be controlled by a valve 15. Aconnecting-pipe 16, secured to the blow-offs 12 and 14, preferably at their i tops, joins those blow-offs at pointswithin the valves 13 and 1 5, and the flow through this connecting-pipe may be controlled by means of'a valve 17 A union 18 is provided in the blow-ofl 14 between the point of junction of the connectiompipe 16 with the blow-off, and a union 19 is placed in the blow-01f 12 between the boiler and the junction of the connectingpipe 16 with'that blow-ofl". A union 20 is also provided in the connecting-pipe 16.

The operation of the apparatus may be described as follows: The water entering the Patented Sept. 26,

heater through the coiled inlet 5 is retarded,

so that the cold water thus introduced is gradually heated and cannot possibly be forced into the boiler while cold. The water becoming heated by the furnace-gases which impinge against the arch will rise according to natural laws and will flow through the boiler feed-pipe 9 into the boiler in proportion to the rate at which it is fed into the heater, the pressures within the boiler and heater being equalized by means of the steam-pipe 6. When the pump is in operation, the valves 13 and 15 in the blow-offs 12 and 14 and the valve 17 in the connectingpipe 16 will be closed and the water entering through the inlet 5 will. after traversing the heater pass through the boiler feed-pipe 9 to the boiler. When the pump is not in operation, circulation between the heater and boiler may be accomplished by opening the valve 17, and thus connecting. the bottoms of the heater and qboiler, their upper portions being connected by the pipe 9, andthe circulation may be regulated by adjusting the valve 17. If now it be desired to blow off the heater, the valve 17 may be closed and the valve 15 opened, When the heater will blow ofi independently of the boiler. In a similar manner if it be desired to blow oti' the boiler the valve 17 may be closed and the.

arch for repairs, inspection, or other purposes.

Without being limited to the precise construction shown and described, What 1 claim 1. The combination With a boiler, of an arch-heater adapted to be turned to and fro, resting upon the furnace-Wall and against the end of the boiler and forming the coveringarch at the rear end of the boiler, a pipe connecting the upper part of the boiler with the upper part of the heater, a boiler-feed-water pipe connecting the upper part of the heater with the upper part of the boiler, and an inlet for feed-Water opening into said heater coiled Within said heater, substantially as described.

2. The combination with a boiler, of an arch-heater adapted to be turned to and fro, resting upon the furnace-Wall and against the end of the boiler and forming the coveringareh at the rear end of the boiler, a pipe connecting the upper part of the boiler With the upper part of the heater, a boiler-feed-Water pipe connecting the upper part of the heater with the upper part of the boiler, and an inlet for feed-Water opening into said heater,

near the bottom of said heater and coiled within the same, substantially as described.

3. The combination with a boiler, ol an arch-heater adapted to be turned to and lro, resting upon thet'nrnace-wall and against the .end of the boiler and forming the coveringareh at the rear end ol the boiler, a steampipe connecting said heater with said boiler,

a feed-Water inlet for said heater, a boilerfeed-Water pipe connecting said heater with said boiler, a blow-ofl' for the. heater, a blowofi for the boiler independent ol said heater, a connectingpipe between said blow-oil's, valves for controlling said blmr-oll's, and a valve for controlling the connectingipe, substantially as described.

4:. The combination with a boiler, of an arch-heater adapted to be turned to and fro, resting upon the furnace-wall and against the end of the boiler, and forming the covering arch at the rear end of the boiler, a steam pipe connecting said heater with said boiler, afeed-water inlet for said heater, a boilerfeed-water pipe connecting said heater with said boiler, a blow-oli' for the heater, a blowofl for the boiler, a connecting-pipe bet ween said blow-offs, and a union between thejunetion of the connecting-pipe with said heater blow-01f and said heater, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two snbscribing witnesses.

HENRY .IC. (RARDN l llt.

Witnesses:

J. F. WISE, T. H. REEVES. 

